Vanatinai or Tagula (formerly called Sudest) is a volcanic island in the south-east of the Louisiade Archipelago within Milne Bay Province of Papua New Guinea. The reef fringed island is approximately 360 kilometres (220 mi) south-east of New Guinea. With an area of 865.7 square kilometres (334.2 sq mi), it is the largest island of the archipelago. Vanatinai town, the main settlement, is located on the northwest coast. The population of the island was about 2,300 in 1978. The principal export is copra.